Liquid-pressure control and dampening device



Jan. 20, 1931. w. c. ELLIOTT LIQUID PRESSURE CONTROL AND DAMPENING DEVICE Filed March 28, 192s IN VEN TOR.

A TTORNEYS.

FIG 5 3 2 W 4 z 4 7 Z 2 /l' a 2 Y l 6 Z 3mm M 3 H s 1 M w Plantea at zo, 193i l ,i l

' ffii yvvi'iiniliivi c.nnnior'r;oniviiivco;oiiiiiinaiiiiii y Y' v vmanina-iitii:ssnitn oon'riggonlnivn DAMiEiriQ-ive y y Appiiaaon fied Mai-cir 25,1923...y semaine.,265;1ie5. 1f'

`My invention relates to. improvements Y[in l method:` of; andapparatus for starting and v stopping electrically driven pumps supply.,- jing Water toelevated tanks or standpipes.

c to vprovide a `device of this character' which J will be actuated automatically bythe pres?vr l c Y v Vstance from the Well, spring flake, river 'or i 'othersourclewofsupplynear or in which the from the tanl'rD overoniingor?running low; *lvlyfiiivention' seeks" to. remedy ltliisfs ituation by Vamtoinati- 'cally Aswitching fol the powerv to 'the motor. v".65

c pump a device which will .operatlevvith butv very little attention and adjustment; a der, vice Whichfcan be placedin the supplyline at the pump andstill control the depth of fvv'aterin, a'sptandpipe orl tank at any desired i distanceA froml the Well 'andfpump,topro- Y vide? aV device yorthischaracter which is'.l sini- K f ple, novel, new, unusual, use-ful', inexpensive;

strong7 durable, reliable and of utilityggv 2 which cannoteasily' get nit/fof"order and which is eiicient for the purposes forvvhich :it is intended. 7

The principal obj ects' of lmy ,invention are sure or head of thewater. in the tank gwvhich `'can be .adjusted to act atY` any desired pressure which lwill obvijatefthe 'necessityfof yan.

overiow returnpipe vfrom' the tank to thev With these and other obj ectsin view, invention consists of the construction, novell c "e'atures and combination offparts tQ be more n Y. fully 'described hereinafter,illustrated in the L 1 accompanying one-sheet drawing andspecili 'Icallylpointed ont'inithe'fclainishereunto ap? Apended it is to be understood that 4thefdravv-v ings andthese speciications' are merelyvfor, illustrative ,purposes and are not restrictive .and that variousclianges inthe'iorm, Apro?,` portion, 'size,-i-Weilght,' shape,.and minor-'defi *tailsy of construction Within the scope bof' my f Y invention may 'beresorted toivithout depart-f i ing from the spirit or principle' of the in' vention or sacrificing any'of .the advantages ln the accompanying' drawingl Figurel 1 is` v 'la .sectional viewv through' the device show- .I ing'the pressure switch in.elevationgf'Fig 2.

" is a sectionalviejw"through 'thelealli'ng check valve'in-the Wateijlineg'ig is avse-ctional view throughthe bkatlle'plates; Fig-.flies a fragmentary 'sectionalvie'w 'of a Water tank 1 or standpipeg'Efig. 15, is an Yelevational vievv` of the device installed onarwateriline s horvv#` ing,` schematic ldiagrainjo'f thejelectrieal con; f nectionsv; y f' Y operating e orientato' any pre-determined' belghe-211801 Y- f V.fsu'fitchiiiggr on the potverfwhen theirtanl j the saidcli'anibei" 1, a c lconnection withfthe said couplingV '3, ,av perforated-disc 6 set rigi'dly,"by any.' means, into fthe said bushingf7 agatevalveff torshutting n oil the Water yvrointhe pumpf' a top fue. v ducing couplingS, having threaded uc-onnec` bossedv central' opening a 'baille QOand4 lbaile.A y.

spacers AThefoil un'derrpressureLfolloivs a` y devious cour'seinitfs passagethroughfthe n fles as indicatedgbythe arrows,"best4k seen in Fignvr battles 19 forming a bellowsas'the-oil;

- 'enters and lleaves the bosse'dcentral 'opening f Like l/Vhere Water pressure,either for public or tanks or standpipes, the latter are usually `located Aon top of a hill or otherelevated situ-[5 f.

ation and usually-at *some-c'onsiderabledis Y pnmp'inust be placed. Much loss, inconvenience i and x annoyance Y result the pnmpfvvhen the tanl'islfull empty orf? contains anypre-determined def V sired -amvountof water.

"Tlhf appa-mms CDSiStS @fari air chambefl 7u having alictuating Water level 2,' abottom ifednting` couplingf,,aplug, cleanout l for bushing 5 in threaded tion Withthe said air-chamber 1Y .and an 'oilisupply chainber), thesaid chamber 9 being Yat,

lprovided with a openinglOlor fill-1: A

ling .and plugged opening 11y ordr'aining the"` .n

said chamber Y9', Air-pressure infletpipe12gis v. n Yindirect coinniunication'with the air chamber Y 1,v ypasses up through the Voil contained in chamberQand exerts pressure Vuponthe surface of thejs'vaidyoilfoicing," the oil through oil i pressure outlet -p'ipe' v13 and into the baille chamber reducingcoupling 14, Y Within coupling 14 andin vthreaded connection therewith isibafile holding shell support and. connection member 15,fhavin`g threaded V#to itslowe'r end' taeiehoiaing She-1i ie. cent-einsam Sheltie r are baf'lewasher 1S, perforated baediscs 19,f v

l inbale' 2O.` Attached to the upper end of valve 42 tomaintain pressure in my device un- Y ou' the power to thefmotor. 33, lThe magnetic f switching device' 3l in the three phase cir-H `2o n take water vsupplypipe 35.

member l5 is a pipe in oil pressure switch 27, where the forceV of the oil is exerted against diaphragm28 in said oil'pressure switch27, which throws vthe circuit breaker 30 set in on the line 29 and Acuts cuit 32 to the motor 33 operates in theV usual manner. It is to be understood" that neither the said oil pressure switch 27-nor the magnetic switch 3l forms kany part 'off my invention.

, Motor 33 is directly'connected to pump 34 ylocated conveniently'with reference to the in- The pipe T 36 l' inthe discharge pipe line 40 to tank 46 forms vconnection with branch oil pipe 37 into whichv my automatic governing y.device isthre`aded At the end o t. piped? is by-pass blowoflr l 38 havinga check valve for allowing the water to return to the vwell or other source of supply throughv return pipe 39 k'should the occasion arise. r`At 41 iscut-ofl1 gate `valve in line 40 v au y gmatic leaking' flap check valve 42 attached'to between-the pump34l and tank 46. vr.The autohinge plate 43 is perforated at 42a and is set-in [the supply line 40 above the pipe T 36 to automatically vprevent the water from flowing back into the well when the pump isshut down and to avoid'sudden undue and excessive fluctuating back pressurefon my automatic lgoverning device; "As can best be seen in Fig. 2

v the said check1 valve 42' is set into pipe 40 and attached thereto by screws 44. The perforated 'flap 42 in lclosed` position 'rests on vvalve seat '45 and is held thercagainst by the `pres- Y i pipe and tank i 'air pressure forcing said oil into said baule chamber, a lurality vofballle discs within said "i is near the bottom the pressure head against which thepump 34 .is operating will be such` vthat, theV wateil passing throughV perforated disc 6 will raise the water level 2 in air chamber 1 very gradually but as the level 'of the water in the tank 46rises to 48, which may .l be at'anv pre-determined`- height, the pres-' sure head due thereto will be transmitted in fluctuating pulsations to the airin chamber l and the oil in chamber 9 until the oil reaches the battles 18, 19 and 20. VBy the timek the oil has passed-thesek bafiles` it reaches opening .Wand passes through pipe 26 with'a steady,

even pressure to beeXerted against diaphragm 28 kand when the pressure on said diaphragm 28 reaches a pre-determined amount,

circuit breaker BO 1s thrown and themotorV st'op.`s,'checi valve 42 closes pipe 40 but enough -water passes throughy the perforation 42a in T 22, the upstanding opening communicating with the pressure A three-part union t turn to the oil supply chamber 9, pressure on diaphra O'm 2,8 will be released, when the magnetic switching' device E31' will operate to automatically close circuit breaker 30 and the motor willstart again. l

Having thus described my invention what is claimedand desired to he secured by 'Letterfsljatent is: i

l. In a devicefof the class described, in combination, an airchamber having its lower end adapted to receive water under pressure from a water supply line, and to hold same in varying volume, Y and for retardingy the flow of water into and out 'of said air chamber, said air chamber adapted through the entering of said kwater to compress air therein, an oil Vchambermounted on said air chamber, means for filling and draining said oil chamber,

means for transmitting the air pressure from f said air chamber to the upper surface of oil y in said oil chamber, a baffle chamber, and air pressure means for forcing the oil from said oil chamber into saidV baffle chamber.

2. A device for stabilizing pulsating pressure on luid'supply-lines, vhavingin combination, an air chamber adapted for attachment upon said supply line and for holding i? -quantities and pressure, vmeansfoltransmitif.;

ting the air pressure fromwsaid air chamber vto the upper surfaceof oil in saidl oil chamber, a

baffie chamber having a dischargeline, said baie chamk r, said di'scsvhaving perforations therethrough arranged y to form a devious course for the oil under pressure in its passage ,y throughsaid bail'les to said discharge line. Y 3, A device for stabilizing pulsatingpressure in fluid supply lines having, in combination, an air chamberadapted at its lower 'end for attaching a branch-oli pipe from said supply line,said chamber having'its lower inlet opening bridged by a perforated disc, lli

an oil chamber communicating with'said air chamber, a baffle, chamber' communicating with said oil chamber, an outlet pipe for said bathe chamber, a plurality of perforated baiile plates within said baffle chamber for stabilizing fluctuating pressure -of oil passing therethrough, and means upon which said device is mounted, for allowing the'fluid, after reach-A ing a pre-determined pressure, toreturn to the source from which it is being pumped.

4. A- device for stabilizing pulsating pressure in fluid supply lines, having'in combina#4 tion, a hinged check valve in said water sup'n rality of perforated discs therein,

" sure means Vthrough the entering.. of 'said water to 00m-v anoilchamber mounted on Y said air chamber, meansforlilling and drain press air therein',

ing said oil chamber, meansfor transmitting the air pressure from said yair chamber tothe upper surfaceA of oil' in 'said' o-il chamber', a

balilefchamber having an upper outlet, airjr/ foroinglsaidoil vinto said l vbaffle chamben'baiile discs in said bafHe cham-l` Y ber for retarding the passage of saidoihs'a-id pressure means for saidloil chamber, means for transmitting the i airpressure fromjsaid air .chamber` to thev rdisc means having perforations therethrough; Y

`said perforations 'arranged to forma devious flow ofsaid oilunder said pres- Y sure mits-passage throughsaidbale discs to ycourse Afor the said outlet.'V

upper surface'of oilifnsaidoil chamber, a bafflechaanber having an outlet, and air pres# fo rforcing the oil from said oil chamber into and'through saidfbaffle-"cfham Y ber and into said outlet.,l v. i, I f y f 5. A device for stabilizing pulsating preS- Y' 7 sure in fluid supply lines,A having in combina-y tion, a hinged perforated check valve in said fluid' supply line,

said chamber havmg a perforated 'discgin its therethrough, air chamber, aibaiile chamber inountedon sardi oil chamber,v saidbaffle chamber havingia pluof said discs Vhaving aperforation ing at the centerlof said lower discy'the disc next ab-ove being flexible and havingasmall Y perforation adjacent :its outer edge,:the disc;

an airchamber adapted at y I itslower end to connect said fluid supply line, i

' Y 1 intake' opening for retarding'the flow loffwater' l an oil chamber mounted on said the lower of-largerv`v size than the others, said large'perforation be-r.V

' next above said Vflexible disc being rigid and. v

, cent its outer-portion,y adapted to press against andclose the vperforation in said bulge in enough oil has passed havinga bulged portion at `its centen saidf bulged portion'being perforated at its'center,r v y I i the disc next above said bulged 'dise being flexible and having a said eXible discsV being said. bulgedr disc luntil Y through the said'perforations adjacent'their respective outer por-y tions to equal the pressure being exerted either above or below said flexible discs.

small perforationfadjai 6. A device for stabilizing pulsating presi Y i sure in iuid supply lines,'having in combination, a hinged check valve in said iiuid supply f il i line,

adapted for permitting-back pressure y therethrough and for retarding the back flow i' Y of fluid therethrough, an air chamber having y fluidi. under its lower end adapted toreceive pressure from said supply line,uandto hold-f* sam in varyingvolume, and for retarding the ow of fluid into and out of saidair cham@v f ber, said air chamber adapted through theI entering of said'water to compress. air therein, an oil chamber mounted onsaid air chamand holding oil and air in 'varying C luantitiesV ber, said oil chamber adapted for receiving i' and pressure, meansfor llingand draining 

